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Abstract
Batch ring opening transesterification copolymerization of ε-caprolactone and ε-decalactone was used to generate statistical copolymers over a wide range of compositions and molar masses. Reactivity ratios determined for this monomer pair, rCL = 5.9 and rDL = 0.03, reveal ε-caprolactone is added preferentially regardless of the propagating chain end. Relative to poly(ε-caprolactone) the crystallinity and melting point of these statistical copolymers were depressed by the addition of ε-decalactone; copolymers containing greater than 31 mol% (46 wt%) ε-decalactone were amorphous. Poly(lactide)-block-poly(ε-caprolactone-co-ε-decalactone)-block-poly(lactide) triblock polymers were also prepared and used to explore the influence of midblock composition on the temperature dependent Flory-Huggins interaction parameter (χ). In addition, uniaxial extension tests were used to determine the effects of midblock composition, poly(lactide) content, and molar mass on the mechanical properties of these new elastomeric triblocks.
Original language | English (US) |
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Pages (from-to) | 3641-3651 |
Number of pages | 11 |
Journal | Polymer Chemistry |
Volume | 6 |
Issue number | 19 |
DOIs | |
State | Published - May 21 2015 |
Bibliographical note
Publisher Copyright:© 2015 The Royal Society of Chemistry.
How much support was provided by MRSEC?
- Shared
Reporting period for MRSEC
- Period 1
Fingerprint
Dive into the research topics of 'Poly(lactide)-block-poly(ε-caprolactone-co-ε-decalactone)-block-poly(lactide) copolymer elastomers'. Together they form a unique fingerprint.-
MRSEC IRG-3: Hierarchical Multifunctional Macromolecular Materials
Reineke, T. M., Bates, F. S., Dorfman, K., Dutcher, C. S., Hillmyer, M. A., Lodge, T., Morse, D. C., Siepmann, I., Barreda, L. & Ganewatta, M. S.
1/1/98 → …
Project: Research project
-
MRSEC Program
THE NATIONAL SCIENCE FOUNDATION, UNIVERSITY OF TEXAS RIO GRANDE VALLEY
8/1/98 → 10/31/20
Project: Research project